RE: How do these sights work?
I used to use an HHA single pin adjustable. Mine had a white strip on the slide adjustment where you could mark your yardages. I rarely moved it from 25 yards except for target practice. I recently switched back to a multi pin sight though. I didn't like having to tinker with the sight under hunting situations. Figured it'd be best for me to keep it simple. No need to adjust anything if my target changes distance.